12 Questions
What is the source of energy for stars like our Sun?
Nuclear fusion reactions involving hydrogen
What is the primary force that holds a star together?
Gravitational force
What is the interstellar medium (ISM)?
Thinly spread gas and dust in outer space
What is the name given to the dense clouds of gas and dust where stars are formed?
Nebula
How old is our Sun?
4.5 billion years
What is the initial process that leads to the formation of stars?
Gravitational collapse of molecular clouds
Which of the following is a key factor in the formation and development of stars?
Gravitational attraction
What is the primary process that drives the energy production of stars like our Sun?
Thermonuclear fusion
How do the masses of stars influence their life cycle and evolution?
Stars with higher masses evolve more rapidly than stars with lower masses.
What is the primary source of the interstellar medium (ISM) that eventually leads to the formation of stars?
Expelled matter from supernova explosions
Which of the following best describes the initial stage of star formation from the interstellar medium?
The clouds of gas and dust accumulate and increase in density due to gravity.
How old is our Sun, according to the information provided in the text?
Approximately 4.5 billion years old
Learn about the nature and life cycle of stars, focusing on the Sun as a model for understanding other stars in the universe.
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